Insulator for an antenna



FIG. 1 is a perspective view of an insulator for an antenna, showing our design,

FIG. 2 is a top plan view thereof,

FIG. 3 is a right side elevation thereof,

FIG. 4 is a first end elevation view thereof, the second end elevation being a mirror image of said first end elevation,

FIG. 5 is a bottom view thereof, and

FIG. 6 is a left side elevation thereof. 

The ornamental design for an insulator for an antenna, as shown. 